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<table width="100%" summary="page for ChildSpeaks"><tr><td>ChildSpeaks</td><td style="text-align: right;">R Documentation</td></tr></table>

<h2>Age at First Speaking</h2>

<h3>Description</h3>

<p>Age at first speaking and aptitude test scores
</p>


<h3>Format</h3>

<p>A data frame with 21 observations on the following 3 variables.
</p>

<table summary="Rd table">
<tr>
 <td style="text-align: right;">
    <code>Child</code> </td><td style="text-align: left;"> ID for each child</td>
</tr>
<tr>
 <td style="text-align: right;">
    <code>Age</code> </td><td style="text-align: left;"> Age at first speaking (in months)</td>
</tr>
<tr>
 <td style="text-align: right;">
    <code>Gesell</code> </td><td style="text-align: left;"> Gesell Aptitude Test Score</td>
</tr>
<tr>
 <td style="text-align: right;">
  </td>
</tr>

</table>



<h3>Details</h3>

<p>The data are from a study about whether there is a relationship between the age at which a child first speaks
(in months) and his or her score on a Gesell Aptitude Test taken later in childhood.
</p>


<h3>Source</h3>

<p>These data were originally collected by L.M. Linde of UCLA but were first published by M.R. Mickey,
O.J. Dunn, and V. Clark, &quot;Note on the use of stepwise regression in detecting outliers,&quot; Computers and Biomedical
Research, 1 (1967), pp. 105-111. The data have been used by several authors.
We found them in David Moore's Basic Practice of Statistics, WH Freeman (2004)
</p>


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